Microcontrollers
| Class | Manufacturer | Architecture | Clock | Wikipedia | Notes |
|---|---|---|---|---|---|
| AVR | Microchip (was Atmel) | 8-bit | AVR microcontrollers | ATmega328, ATtiny | |
| PIC | Microchip | 8-bit | PIC microcontrollers | ||
| STM32 | ST Micro | 32 bit ARM Cortex-M0+ | STM32 | ||
| SAM | Microchip (was Atmel) | 32 bit ARM Cortex-M0+ | Atmel ARM-based processors | e.g. ATSAMD21G18 | |
| RP2040 | Raspberry Pi | 32 bit ARM Cortex-M0+ | RP2040 | ||
| ESP32 | Espressif Systems | Xtensa dual-core (or single-core) 32-bit LX6 microprocessor | 160 or 240 MHz | ESP32 | replaces ESP8266; integrated Wi-Fi and dual-mode Bluetooth |